diff --git a/README.md b/README.md
index d132d39..f4f2048 100644
--- a/README.md
+++ b/README.md
@@ -180,11 +180,6 @@ Courses | Duration | Effort | Prerequisites
 [Programming Languages, Part B](https://www.coursera.org/learn/programming-languages-part-b) | 3 weeks | 8-16 hours/week | Programming Languages, Part A
 [Programming Languages, Part C](https://www.coursera.org/learn/programming-languages-part-c) | 3 weeks | 8-16 hours/week | Programming Languages, Part B
 
-#### Readings
-- **Required** to learn about monads, laziness, purity: [Learn You a Haskell for a Great Good!](http://learnyouahaskell.com/)
-  - **Note**: probably the best resource to learn Haskell: [Haskell Programming from First Principles](http://haskellbook.com/) `paid`
-- **Required**, to learn about logic programming, backtracking, unification: [Learn Prolog Now!](http://lpn.swi-prolog.org/lpnpage.php?pageid=top)
-
 ### Math Electives
 **Students must choose one of the following topics**: calculus, linear algebra, logic, or probability.
 
@@ -350,6 +345,8 @@ Courses | Duration | Effort | Prerequisites
 :-- | :--: | :--: | :--:
 [Introduction to Parallel Programming](https://classroom.udacity.com/courses/cs344) ([alt](https://www.youtube.com/playlist?list=PLGvfHSgImk4aweyWlhBXNF6XISY3um82_)) ([HW](https://colab.research.google.com/github/depctg/udacity-cs344-colab))| 12 weeks | - | C, algorithms
 [Compilers](https://www.edx.org/course/compilers) ([alt](https://www.youtube.com/playlist?list=PLDcmCgguL9rxPoVn2ykUFc8TOpLyDU5gx))| 9 weeks | 6-8 hours/week | none
+[Introduction to Haskell](https://www.seas.upenn.edu/~cis194/fall16/)| 14 weeks | - | -
+[Learn Prolog Now!](http://lpn.swi-prolog.org/lpnpage.php?pageid=top)| 12 weeks | - | -
 [Software Debugging](https://www.udacity.com/course/software-debugging--cs259)| 8 weeks | 6 hours/week | Python, object-oriented programming
 [Software Testing](https://www.udacity.com/course/software-testing--cs258) | 4 weeks | 6 hours/week | Python, programming experience
 [LAFF - On Programming for Correctness](https://www.edx.org/course/laff-on-programming-for-correctness) | 7 weeks | 6 hours/week | linear algebra